SC 13G

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 13G

Under the Securities Exchange Act of 1934

(Amendment No.     )*

Daqo New Energy Corp.

(Name of Issuer)

Ordinary Shares, par value US$0.0001 per share

(Title of Class of Securities)

G26583 107

(CUSIP Number)

December 31, 2010

(Date of Event which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

¨ Rule 13d-1(b)

¨ Rule 13d-1(c)

x Rule 13d-1(d)

* The remainder of this cover page shall be filled out for a reporting person’s initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter the disclosures provided in a prior cover page.

The information required in the remainder of this cover page shall not be deemed to be “filed” for the purpose of Section 18 of the Securities Exchange Act of 1934 (“Act”) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

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CUSIP No. G26583 107
1.	Names of Reporting Persons. I.R.S. Identification Nos. of above persons (entities only). Ace Pro Holdings Limited
2.	Check the Appropriate Box if a Member of a Group (See Instructions) (a)  ¨        (b)  x
3.	SEC Use Only
4.	Citizenship or Place of Organization     British Virgin Islands
Number of Shares Beneficially Owned by Each Reporting Person With:		5.	Sole Voting Power     0
		6.	Shared Voting Power     9,220,000
		7.	Sole Dispositive Power     0
		8.	Shared Dispositive Power     9,220,000
9.	Aggregate Amount Beneficially Owned by Each Reporting Person     9,220,000
10.	Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions):  ¨
11.	Percent of Class Represented by Amount in Row (9)     5.4%1
12.	Type of Reporting Person (See Instructions)     CO

¹ Based on 169,714,103 outstanding ordinary shares immediately following the consummation of the Issuer’s initial public offering as set forth in the Issuer’s Form 424(B)(4), filed with the Securities and Exchange Commission on October 7, 2010.

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CUSIP No. G26583 107
1.	Names of Reporting Persons. I.R.S. Identification Nos. of above persons (entities only). Bin Cai
2.	Check the Appropriate Box if a Member of a Group (See Instructions) (a)  ¨        (b)  x
3.	SEC Use Only
4.	Citizenship or Place of Organization     People’s Republic of China
Number of Shares Beneficially Owned by Each Reporting Person With:		5.	Sole Voting Power     87,5002
		6.	Shared Voting Power     9,220,000
		7.	Sole Dispositive Power     87,5002
		8.	Shared Dispositive Power     9,220,000
9.	Aggregate Amount Beneficially Owned by Each Reporting Person     9,307,500
10.	Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions)
11.	Percent of Class Represented by Amount in Row (9)     5.5%3
12.	Type of Reporting Person (See Instructions)     IN

² Represents 87,500 ordinary shares issuable upon exercise of options held by Mr. Bin Cai.

³ Based on 169,714,103 outstanding ordinary shares immediately following the consummation of the Issuer’s initial public offering as set forth in the Issuer’s Form 424(B)(4), filed with the Securities and Exchange Commission on October 7, 2010.

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CUSIP No. G26583 107
1.	Names of Reporting Persons. I.R.S. Identification Nos. of above persons (entities only). Weidong Chen
2.	Check the Appropriate Box if a Member of a Group (See Instructions) (a)  ¨        (b)  x
3.	SEC Use Only
4.	Citizenship or Place of Organization     People’s Republic of China
Number of Shares Beneficially Owned by Each Reporting Person With:		5.	Sole Voting Power     0
		6.	Shared Voting Power     9,220,000
		7.	Sole Dispositive Power     0
		8.	Shared Dispositive Power     9,220,000
9.	Aggregate Amount Beneficially Owned by Each Reporting Person     9,220,000
10.	Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions)
11.	Percent of Class Represented by Amount in Row (9)     5.4%4
12.	Type of Reporting Person (See Instructions)     IN

⁴ Based on 169,714,103 outstanding ordinary shares immediately following the consummation of the Issuer’s initial public offering as set forth in the Issuer’s Form 424(B)(4), filed with the Securities and Exchange Commission on October 7, 2010.

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CUSIP No. G26583 107
1.	Names of Reporting Persons. I.R.S. Identification Nos. of above persons (entities only). Jinhong Cai
2.	Check the Appropriate Box if a Member of a Group (See Instructions) (a)  ¨        (b)  x
3.	SEC Use Only
4.	Citizenship or Place of Organization     People’s Republic of China
Number of Shares Beneficially Owned by Each Reporting Person With:		5.	Sole Voting Power     0
		6.	Shared Voting Power     9,220,000
		7.	Sole Dispositive Power     0
		8.	Shared Dispositive Power     9,220,000
9.	Aggregate Amount Beneficially Owned by Each Reporting Person     9,220,000
10.	Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions)
11.	Percent of Class Represented by Amount in Row (9)     5.4%5
12.	Type of Reporting Person (See Instructions)     IN

⁵ Based on 169,714,103 outstanding ordinary shares immediately following the consummation of the Issuer’s initial public offering as set forth in the Issuer’s Form 424(B)(4), filed with the Securities and Exchange Commission on October 7, 2010.

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CUSIP No. G26583 107
1.	Names of Reporting Persons. I.R.S. Identification Nos. of above persons (entities only). Jinrong Xiao
2.	Check the Appropriate Box if a Member of a Group (See Instructions) (a)  ¨        (b)  x
3.	SEC Use Only
4.	Citizenship or Place of Organization     People’s Republic of China
Number of Shares Beneficially Owned by Each Reporting Person With:		5.	Sole Voting Power     0
		6.	Shared Voting Power     9,220,000
		7.	Sole Dispositive Power     0
		8.	Shared Dispositive Power     9,220,000
9.	Aggregate Amount Beneficially Owned by Each Reporting Person     9,220,000
10.	Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions)
11.	Percent of Class Represented by Amount in Row (9)     5.4%6
12.	Type of Reporting Person (See Instructions)     IN

⁶ Based on 169,714,103 outstanding ordinary shares immediately following the consummation of the Issuer’s initial public offering as set forth in the Issuer’s Form 424(B)(4), filed with the Securities and Exchange Commission on October 7, 2010.

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CUSIP No. G26583 107
1.	Names of Reporting Persons. I.R.S. Identification Nos. of above persons (entities only). Defu Ji
2.	Check the Appropriate Box if a Member of a Group (See Instructions) (a)  ¨        (b)  x
3.	SEC Use Only
4.	Citizenship or Place of Organization     People’s Republic of China
Number of Shares Beneficially Owned by Each Reporting Person With:		5.	Sole Voting Power     0
		6.	Shared Voting Power     9,220,000
		7.	Sole Dispositive Power     0
		8.	Shared Dispositive Power     9,220,000
9.	Aggregate Amount Beneficially Owned by Each Reporting Person     9,220,000
10.	Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions)
11.	Percent of Class Represented by Amount in Row (9)     5.4%7
12.	Type of Reporting Person (See Instructions)     IN

⁷ Based on 169,714,103 outstanding ordinary shares immediately following the consummation of the Issuer’s initial public offering as set forth in the Issuer’s Form 424(B)(4), filed with the Securities and Exchange Commission on October 7, 2010.

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Item 1.	(a)	Name of Issuer:
		Daqo New Energy Corp.
	(b)	Address of Issuer’s Principal Executive Offices:
		666 Longdu Avenue Wanzhou, Chongqing 404000 People’s Republic of China Telephone: (86-23) 6486-6666
Item 2.	(a)	Name of Person Filing:
		Ace Pro Holdings Limited Bin Cai Weidong Chen Jinhong Cai Jinrong Xiao Defu Ji
	(b)	Address of Principal Business Office or, if none, Residence:
		For all Reporting Persons: c/o 66 Xinzhong Road Xinba, Yangzhong, Jiangsu Province People’s Republic of China
	(c)	Citizenship:
		Ace Pro Holdings Limited: British Virgin Islands Bin Cai:        People’s Republic of China Weidong Chen:        People’s Republic of China Jinhong Cai:             People’s Republic of China Jinrong Xiao:           People’s Republic of China Defu Ji:        People’s Republic of China
	(d)	Title of Class of Securities:
		Ordinary Shares, par value US$0.0001 per share
	(e)	CUSIP Number:
		G26583 107
Item 3.	If this statement is filed pursuant to §§240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
	Not applicable.

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Item 4.	Ownership
	Provide the following information regarding the aggregate number and percentage of the class of securities of the issuer identified in Item 1.
	(a)	Amount beneficially owned:

Reporting Person	Amount beneficially owned		Percent  of Class8			Sole voting power		Shared voting power		Sole dispositive power		Shared voting power
Ace Pro Holdings Limited		9,220,000		5.4	%		0		9,220,000		0		9,220,000
Bin Cai		9,307,500		5.5	%		87,500		9,220,000		87,500		9,220,000
Weidong Chen		9,220,000		5.4	%		0		9,220,000		0		9,220,000
Jinhong Cai		9,220,000		5.4	%		0		9,220,000		0		9,220,000
Jinrong Xiao		9,220,000		5.4	%		0		9,220,000		0		9,220,000
Defu Ji		9,220,000		5.4	%		0		9,220,000		0		9,220,000

Ace Pro Holdings Limited is the record holder of 9,220,000 ordinary shares of the Issuer. Bin Cai, Weidong Chen, Jinhong Cai, Jinrong Xiao and Defu Ji are the shareholders of Ace Pro Holdings Limited and share voting and dispositive power over all of the shares of the Issuer held by Ace Pro Holdings Limited.

Item 5.	Ownership of Five Percent or Less of a Class
	Not applicable.
Item 6.	Ownership of More than Five Percent on Behalf of Another Person
	Not applicable.
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on By the Parent Holding Company or Control Person
	Not applicable.
Item 8.	Identification and Classification of Members of the Group
	Not applicable.
Item 9.	Notice of Dissolution of Group
	Not applicable.
Item 10.	Certification
	Not applicable.

⁸ Based on 169,714,103 outstanding ordinary shares immediately following the consummation of the Issuer’s initial public offering as set forth in the Issuer’s Form 424(B)(4), filed with the Securities and Exchange Commission on October 7, 2010.

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SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

Date: February 14, 2011

ACE PRO HOLDINGS LIMITED
By:	/s/ BIN CAI
Name:	Bin Cai
Title:	Director
By:	/s/ BIN CAI
	Bin Cai
By:	/s/ WEIDONG CHEN
	Weidong Chen
By:	/s/ JINHONG CAI
	Jinhong Cai
By:	/s/ JINRONG XIAO
	Jinrong Xiao
By:	/s/ DEFU JI
	Defu Ji

EX-99.(A)

Exhibit 99A

Joint Filing Agreement

In accordance with Rule 13d-1(k) promulgated under the Securities Exchange Act of 1934, as amended, the undersigned hereby agree to the joint filing with all other Reporting Persons (as such term is defined in the Schedule 13G referred to below) on behalf of each of them of a statement on Schedule 13G (including amendments thereto) with respect to the ordinary shares, par value US$0.0001, of Daqo New Energy Corp., a Cayman Islands company, and that this Agreement may be included as an Exhibit to such joint filing. This Agreement may be executed in any number of counterparts all of which, taken together, shall constitute one and the same instrument.

ACE PRO HOLDINGS LIMITED
By:	/s/ Bin Cai
Name:	Bin Cai
Title:	Director
By:	/s/ BIN CAI
	Bin Cai
By:	/s/ WEIDONG CHEN
	Weidong Chen
By:	/s/ JINHONG CAI
	Jinhong Cai
By:	/s/ JINRONG XIAO
	Jinrong Xiao
By:	/s/ DEFU JI
	Defu Ji